Bench-vise.



Patented 001;. 7, I902.

J. B. LONG.

BENCH VISE.

(Appliagtion filed. Feb. 12, 1902.) 4

(lie Model.)

ATTEST INVEN T 01 77 Arr IY n4: Noun: miss cow. wmo-Lrrha, wanmarou n cUNITED STATES PATENT ()FFIcE.

JOHN R. LONG, OF WARREN, PENNSYLVANIA.

BENCH-VISE.

SPECIFICATION forming part of Letters Patent No. 710,482, dated October'7, 1902. Application filed February 12, 1902. Serial No. 93,673.(NQmodelJ To alt whom it may concern:

Be it known that I, JOHN R. LONG, a citizen of the United States,residing at \Varren, in the county of Warren and State of Pennsylvania,have invented certain new and useful Improvements in Bench-Vises; and Ido declare that the following is afull, clear, and exact description ofthe invention, which will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to bench-Vises of a kind which are adapted to behorizontally rotated when free on their supports and to be automaticallylocked against rotation when the vise is in clamping position, allsubstantially as shown and described, and particularly pointed out inthe claims.

In the accompanying drawings, Figure 1 is a longitudinal sectionalelevation of a vise with all the parts in working position. Fig 2 is across-section on line y 3.], Fig. 1. Figs. 3 and I are perspective viewsof details of the invention, as hereinafter fully described.

A represents what is termed the fixed member of the vise, and B is themovable member. C is the base for said members, upon which the member Ais supported, and has a circular cavity or recess in its bottom adaptedto rest over or upon the circular projection a centrally of the top ofthe base 0. The bearing-surface of the fixed member A outside of saidcavity is fiat on the said base and has such width of bearing that itwill afford frictional locking engagement when the parts are in clampingposition.

D is the usual screw for Vises, projecting lengthwise through the arm I)of movable member B and rotatably engaged therewith at its forward end.

The idea of this invention, like those upon which it is an improvement,is to provide antomatic mechanism to prevent rotation of the vise whenan article is clamped therein. To these ends I provide what is shownhere as a rectangular screw-threaded head F, serving as a nut, adaptedto run on screw D or to run said screw through said nut, and therebycontrol the position of bolt E, of which nut F practically forms a head.The said bolt has a nut 2 on its lower end beneath base G, by which itis fastened beneath and which may be permanently locked or fixed on thebolt, so as to avoid its loosening in action. The

idea now is to cause a tightening of the parts and prevent rotation ofbolt member A by producing an upward pull on the bolt E and a downwardpressure of the fixed member in its base. This is partly accomplished bymeans .of tilting brace G, which is pivoted on pin 3 and abuts in asuitable cavity in the bottom of fixed member A. Said brace is providedwith shoulders 4, which come at the sides of screwD and are abutted bythe square end of nut F, while the forward side projections 5 of saidpart G come at each side of the web 6, which connects boltE with nut F,and where a pin 7 through holes in the projections 5 and the said webmake a pivotallyworking connection between said parts.

It follows with the foregoing construction that when the jaws of thevise are tightened on an article and there occurs an upward pull onscrew D in this operation, as there must by the foregoing construction,all the down pressure comes upon member A through inclined rotatablebrace G and bolt E, and in this operation there is a slight tilting ofsaid parts, for which provision is made in the con struction. The fixedmember A has a circular bearing-seat for brace G, and pin 3 serves tokeep said brace in its place.

What I claim is- 1. A vise'consisting of a fixed and a movable memberand a base on which the movable member is rotatably supported, and meansfor locking said parts against rotation comprising a screw, a boltconnecting said movable member with the base andprovided with a threadedhead engaged in said screw, and a brace seated in said fixed member, andpivotally connected with the top of said bolt, substantially asdescribed.

2. The fixed and the movable members of the vise, and a base in whichthey are rotatable, in combination with a screw for clamping saidmembers together, a bolt securing said members to the base having athreaded head on said screw, and an inclined brace connected with saidnut and having a rotatable bearing in said fixed member, substantiallyas described.

WVitness my hand to the foregoing specification this 31st day ofJanuary, 1902.

JOHN R. LONG.

Witnesses:

R. B. MOSER, T. M. MADDEN.

